<?php
/**
 * @author  web_dxj@163.com
 * @time    2015-10-10 16:27
 */


/**
 * curl模拟Get、Post提交
 * @param string $url
 * @param string $type
 * @param array|bool $data
 * @param string|null $err_msg
 * @param int $timeout
 * @param array $cert_info
 * @return mixed
 */
if ( !function_exists('go_curl') )
{
    function go_curl($url, $type, $data = false, &$err_msg = null, $timeout = 20, $cert_info = array())
    {
        $type = strtoupper($type);
        if ($type == 'GET' && is_array($data)) {
            $data = http_build_query($data);
        }
        $option = array();
        if ( $type == 'POST' ) {
            $option[CURLOPT_POST] = 1;
        }
        if ($data) {
            if ($type == 'POST') {
                $option[CURLOPT_POSTFIELDS] = $data;
            } elseif ($type == 'GET') {
                $url = strpos($url, '?') !== false ? $url.'&'.$data : $url.'?'.$data;
            }
        }
        $option[CURLOPT_URL] = $url;
        $option[CURLOPT_FOLLOWLOCATION] = TRUE;
        $option[CURLOPT_MAXREDIRS] = 4;
        $option[CURLOPT_RETURNTRANSFER] = TRUE;
        $option[CURLOPT_TIMEOUT] = $timeout;
        //设置证书信息
        if(!empty($cert_info) && !empty($cert_info['cert_file'])) {
            $option[CURLOPT_SSLCERT] = $cert_info['cert_file'];
            $option[CURLOPT_SSLCERTPASSWD] = $cert_info['cert_pass'];
            $option[CURLOPT_SSLCERTTYPE] = $cert_info['cert_type'];
        }
        //设置CA
        if(!empty($cert_info['ca_file'])) {
            // 对认证证书来源的检查，0表示阻止对证书的合法性的检查。1需要设置CURLOPT_CAINFO
            $option[CURLOPT_SSL_VERIFYPEER] = 1;
            $option[CURLOPT_CAINFO] = $cert_info['ca_file'];
        } else {
            // 对认证证书来源的检查，0表示阻止对证书的合法性的检查。1需要设置CURLOPT_CAINFO
            $option[CURLOPT_SSL_VERIFYPEER] = 0;
        }
        $ch = curl_init();
        curl_setopt_array($ch, $option);
        $response = curl_exec($ch);
        $curl_no = curl_errno($ch);
        $curl_err = curl_error($ch);
        curl_close($ch);
        // error_log
        if($curl_no > 0) {
            if($err_msg !== null) {
                $err_msg = '('.$curl_no.')'.$curl_err;
            }
        }
        return $response;
    }
}